the Hook EXT

Pushing the limits of what you can tackle, the radical EXT offers uprated strength and manoeuvrability.

  • * Shown size M. Final product may vary in appearance, finish, minor details

"As capable on backcountry campouts as it is on post-work blasts, the Hook EXT remains the choice when you’re unsure of the terrain, but know you want to have fun riding it."

Introducing the Hook EXT

The Hook’s hoodlum tendencies given free rein. Using a Columbus steel frame, dedicated carbon fork, and lively 27.5-inch wheels, the EXT can batter through territory out-of-bounds to other drop handlebar bikes. Backed by Sram’s 1 x 11 Rival groupset, this provides both the gearing range and braking power needed for extreme riding. Adding more build options, this year sees the addition of an integrated rear light mount. As capable on backcountry campouts as it is on post-work blasts, the Hook EXT remains the choice when you’re unsure of the terrain, but know you want to have fun riding it.

 

  • * Columbus Cromor double butted frame with rear light mount.
  • * Full carbon tapered fork with internal light cable routing, through axles and triple cage mounts.
  • * Hydraulic Sram Rival 1 x 11 groupset and brakes.
  • * Bombtrack Lyer 30 mm alluminium crank with 40 T direct mount chainring.
  • * Bombtrack Tau 12 mm through axle hubs.
  • * KMC X11 EPT Anti Rust Chain.
  • * Wide rims for improved tire performance.
  • * Toptube bag direct mounts, triple cage mount on downtube and seattube for optimized bottle position, bottle cage mounts underneath the downtube and rear rack mounts.


" I love to see a bike that’s completely ready for bikepacking or light touring just as it is, and the Hook EXT is exactly that. Everything is accounted for braze on-wise: three on each blade of the fork, six within the frame (allowing for lots of water bottle placement options if you’re running a partial framebag), and two below it, plus provision for mudguards, ideal for winter commuting. There are eyelets for a direct mount top tube bag, too. "
@Cass Gilbert / Bikepacking.com
Read the full review »
  • SPECIFICATION

    Color 1 Matt Metallic Grey Blue
    Color 2 -
    Frame COLUMBUS CROMOR double butted tubing, TA, rack / fender mounts, internal light cable routing, rear light mount, 86.5 mm T47 BB shell
    Fork Full carbon, TA, 1.1/2'' - 1.1/8'', fender / triple cage mounts, internal hub dynamo cable routing
    Handlebar BOMBTRACK CX-10 drop bar, 31.8 mm, 10° flare
    Grips BOMBTRACK ESCAPE bar tape
    Stem BOMBTRACK ROAM forged aluminium stem, -7°
    Headset Sealed external aheadset, 1.1/2'' - 1.1/8''
    Levers SRAM RIVAL 1 double tap hydraulic
    Shifter SRAM RIVAL 1 double tap 1 x 11
    Brakes SRAM RIVAL flat mount hydraulic disc brakes with 160 mm rotors
    Crankset BOMBTRACK LYER forged aluminium crank, direct mount interface (SRAM compatible), 30 mm spindle
    BB BOMBTRACK T47 internal sealed BB for 30 mm spindle
    Pedals -
    Chain KMC X11 EPT Anti Rust chain, 1/2'' x 11/128'', 114L
    Chainring CNC machined aluminium, narrow-wide, 40 T
    Cassette SRAM PG-1130 11-speed, 11 - 42 T
    Front derailleur -
    Rear derailleur SRAM RIVAL 1, clutch, long cage
    Front hub BOMBTRACK TAU sealed disc hub, 12 x 100 mm thru-axle
    Rear hub BOMBTRACK TAU sealed disc hub, 11-speed, 12 x 142 mm thru-axle
    Front rim WTB ST Light i25 double wall, TCS 2.0, 32h
    Rear rim WTB ST Light i23 double wall, TCS 2.0, 32h
    Saddle BOMBTRACK COMP saddle
    Seat post BOMBTRACK YEW aluminium seatpost, 27.2 mm x 300 mm
    Seat clamp BOMBTRACK ORIGIN forged aluminium seat clamp, 29.8 mm
    Front tire WTB RANGER TCS LIGHT / FAST ROLLING 27.5'' x 2.0'', tubeless ready
    Rear tire WTB RANGER TCS LIGHT / FAST ROLLING 27.5'' x 2.0'', tubeless ready
    Fender -
    Rack -
    Light -
    Weight 11.2 kg (size M)
    Weight frameset 2710 g frame (size L, incl. TA, hanger)
    600 g fork (300 mm steerer, incl. TA)
    Maximum rider weight 130 kg incl. Luggage
    ASTM riding condition 2
  • BUILD INFO

    BB Standard T47 - 86.5 mm shell width
    Headset Standard (S.H.I.S.) EC34 / 28.6 | EC44 / 40
    Fork Max Tire Clearance w/o fender 650B x 52C / 700C x 45C
    Frame Max Tire Clearance w/o fender 650B x 52C / 700C x 40C
    Maximum chainring clearance 1x 44 T with 45 mm chainline
    Maximum chainring clearance 2x 50 / 36 T with 45 mm chainline
    Seat Post Diameter 27.2 mm
    Seat clamp diameter 29.8 mm
    Brake mount front FM
    Brake mount rear FM
    Maximum rotor clearance front 160 mm
    Maximum rotor clearance rear 160 mm
    Front through axle 12 mm x 100 mm, 1.5 TPI
    Rear through axle 12 mm x 142 mm, 1.5 TPI
    Derailleur hanger BT-DH-008
    ISO testing standard Road
    Crankarm XS 165 mm / S - M 170 mm / L - XL 175 mm
    Q Factor 152 mm
    BCD crank direct mount (Sram compatible)
    Chainline 45 mm
    Spoke length front wheel tba
    Spoke length rear wheel tba
    Spoke count (front / rear) 32 / 32
    ERD 570 mm
    Front hub PCD 58 mm
    Rear hub PCD 58 mm
    Stem Length XS - S 80 mm / M 90 mm / L - XL 100 mm
    Stem angle -7°
    Headset Spacers 1 x 10 mm, 2 x 5 mm
    Seat post offset 0 mm
    Seat post length 300
  • GEOMETRY FRAME

    Bike Size XS S M L XL
    Wheel size 27.5'' 27.5'' 27.5'' 27.5'' 27.5''
    Seat Tube Length 460 500 530 570 600
    Horizontal TT length 519 533 556 570 595
    Seat Angle 74.5° 74.5° 74.0° 74.0° 74.0°
    Head Angle 71.5° 71.5° 72.0° 72.0° 72.0°
    Headtube Length 110 130 150 170 190
    BB Drop 75 75 70 70 70
    Chainstay Length 425 425 425 425 425
    Fork Offset 48 48 48 48 48
    Trail 65 65 62 62 62
    Wheelbase Length 995 1010 1025 1040 1060
    Standover 748 776 803 831 855
    Reach 365 374 387 396 409
    Stack 554 573 589 608 627
    Front Center 581 596 610 625 645
    Axle to Crown 398 398 398 398 398
    Minimum rider height * 1500 1600 1700 1790 1880
    Maximum rider height * 1610 1710 1810 1900 1990
     

    * Our bike size recommendation generally represents a rough guideline for quickly narrowing down the sizes from which to choose based on the body height. Bike fitting is a complex topic and other measurements and factors have to be accounted for as well. Since no two human bodys are exactly the same it is not possible to give a 100% correct advice for everyone. Therefore BOMBTRACK cannot guarantee for the stated recommendations to be correct for every individual customer. The best way to work out the correct size is to consult a local BOMBTRACK dealer or a professional bike fitter and have them determine the needed size.

  • GEOMETRY HANDLEBAR

    Bike Size XS S M L XL
    Handlebar type Dropbar Dropbar Dropbar Dropbar Dropbar
    Width (drops) 400 420 420 440 440
    Width (barends) 446 466 466 486 486
    Reach 75 75 75 75 75
    Flare 10° 10° 10° 10° 10°
    Backsweep - - - - -
    Drop 116 116 116 116 116
    Upsweep - - - - -
    Rise - - - - -

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